1 /** 2 * io.h - DesignWare USB3 DRD IO Header 3 * 4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com 5 * 6 * Authors: Felipe Balbi <balbi@ti.com>, 7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de> 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The names of the above-listed copyright holders may not be used 19 * to endorse or promote products derived from this software without 20 * specific prior written permission. 21 * 22 * ALTERNATIVELY, this software may be distributed under the terms of the 23 * GNU General Public License ("GPL") version 2, as published by the Free 24 * Software Foundation. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 27 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 28 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 30 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 31 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 32 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 33 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 34 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 35 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 36 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef __DRIVERS_USB_DWC3_IO_H 40 #define __DRIVERS_USB_DWC3_IO_H 41 42 #include <linux/io.h> 43 44 #include "core.h" 45 46 static inline u32 dwc3_readl(void __iomem *base, u32 offset) 47 { 48 /* 49 * We requested the mem region starting from the Globals address 50 * space, see dwc3_probe in core.c. 51 * However, the offsets are given starting from xHCI address space. 52 */ 53 return readl(base + (offset - DWC3_GLOBALS_REGS_START)); 54 } 55 56 static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value) 57 { 58 /* 59 * We requested the mem region starting from the Globals address 60 * space, see dwc3_probe in core.c. 61 * However, the offsets are given starting from xHCI address space. 62 */ 63 writel(value, base + (offset - DWC3_GLOBALS_REGS_START)); 64 } 65 66 #endif /* __DRIVERS_USB_DWC3_IO_H */ 67